本帖最后由 pcduino 于 2013-5-13 10:21 编辑
想在室内营造一点小氛围否,话说工程师工作繁忙也得自己造些情调不是。这我是在 pcDuino上做的,接一个灯带驱动模块LED strip driver,链接文章里用的Arduino ,附有程序代码,在pcDuino上点亮的话程序代码我也会附上的。为了使效果更好,LED灯带我设计的是呼吸灯哦!
LED strip driver 模块
LED 灯带(5m)
接线很简单,LED strip driver这里接了12V直流电源
CLK --> pcDuino D2
DIN --> pcDuino D3
GND --> pcDuino GND
打开 ubuntu编译运行程序代码
点亮后的 5m灯带效果,这里是拍出来的照片灯带亮度逐渐变化的效果看不很明显,但是它是会“呼吸”的
程序代码:
- #include "core.h"
- #define uint8_t unsigned char
- #define uint32_t unsigned long
- uint8_t Clkpin;
- uint8_t Datapin;
- void RGBdriver(uint8_t Clk, uint8_t Data)
- {
- Clkpin = Clk;
- Datapin = Data;
- pinMode(Datapin, OUTPUT);
- pinMode(Clkpin, OUTPUT);
- }
- void ClkRise(void)
- {
- digitalWrite(Clkpin, LOW);
- delayMicroseconds(1);
- digitalWrite(Clkpin, HIGH);
- delayMicroseconds(1);
- }
- void Send32Zero(void)
- {
- unsigned char i;
- for (i=0; i<32; i++)
- {
- digitalWrite(Datapin, LOW);
- ClkRise();
- }
- }
- void begin(void)
- {
- Send32Zero();
- }
- void end(void)
- {
- Send32Zero();
- }
- uint8_t TakeAntiCode(uint8_t dat)
- {
- uint8_t tmp = 0;
- if ((dat & 0x80) == 0)
- {
- tmp |= 0x02;
- }
- if ((dat & 0x40) == 0)
- {
- tmp |= 0x01;
- }
- return tmp;
- }
- // gray data
- void DatSend(uint32_t dx)
- {
- uint8_t i;
- for (i=0; i<32; i++)
- {
- if ((dx & 0x80000000) != 0)
- {
- digitalWrite(Datapin, HIGH);
- }
- else
- {
- digitalWrite(Datapin, LOW);
- }
- dx <<= 1;
- ClkRise();
- }
- }
- // Set color
- void SetColor(uint8_t Red,uint8_t Green,uint8_t Blue)
- {
- uint32_t dx = 0;
- dx |= (uint32_t)0x03 << 30; // highest two bits 1锛宖lag bits
- dx |= (uint32_t)TakeAntiCode(Blue) << 28;
- dx |= (uint32_t)TakeAntiCode(Green) << 26;
- dx |= (uint32_t)TakeAntiCode(Red) << 24;
- dx |= (uint32_t)Blue << 16;
- dx |= (uint32_t)Green << 8;
- dx |= Red;
- DatSend(dx);
- }
- void setup()
- {
- RGBdriver(2,3);
- }
- void loop()
- {
- unsigned int i;
- while(1)
- {
- for(i = 0;i < 256;i ++)
- {
- begin(); // begin
- SetColor(0,0,i); //Blue. First node data. SetColor(R,G,B)
- end();
- //delay(1);
- }
- for(i = 255;i > 0;i --)
- {
- begin(); // begin
- SetColor(0,0,i); //Blue. first node data
- end();
- //delay(1);
- }
- }
- }
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